Still looking about the net.
I found these:
http://flyawayhelmets.com/They look rad but I'm not sure how light they are. Does anyone have one?
Protec helmets seem to be weighing in around 350/400 grams which seems heavy to me.
Those climbing jobs are under 200g.
You would think someone would make a really light skate helmet that offers a bit of protection.
May be I'm just fussy, but I'd say weight, comfort, safety is more my order of priorities...